外星人大猜想

The hunt for aliens is on! After a distinguished career in cosmology Professor Martin Rees, the astronomer royal, has taken up the search for extra-terrestrials. Looking for aliens is no longer science fiction - it is a question that's engaging some of the greatest minds in science.　　As our knowledge of the universe has increased, we're getting closer to answers. Many scientists..在他快要不行的时候，奇迹出现了，我们也要学会去享受生活中那些美好，